Results 211 to 220 of about 8,613 (260)

Closed-loop pulsating heat pipe

Applied Thermal Engineering, 2001
Flow visualization was conducted for the closed-loop pulsating heat pipe (PHP) using a charge coupled device (CCD). It was observed that during the start-up period, the working fluid oscillates with large amplitude, however, at steady operating state, the working fluid circulates.
B.Y Tong, T.N Wong, K.T Ooi
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Thermal Characterization of Pulsating Heat Pipes

Thermal and Thermomechanical Proceedings 10th Intersociety Conference on Phenomena in Electronics Systems, 2006. ITHERM 2006., 2006
Experimental studies were carried out to understand the heat transfer characteristics of pulsating heat pipes. Two heat pipes with different working fluids of HFC-134a and butane are evaluated. Both heat pipes are made of aluminum plate and have the same width of 50 mm and thickness of 1.9 mm.
null Guoping Xu, null Shibin Liang, M. Vogel   +2 more
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Parametric studies on pulsating heat pipe

International Journal of Numerical Methods for Heat & Fluid Flow, 2010
PurposeThe purpose of this paper is to present a numerical investigation on pulsating heat pipe (PHP) to study the slug velocities as a function of various parameters.Design/methodology/approachThe governing equation of PHP is solved using explicit embedded Runge‐Kutta method, the Dormand–Prince pair in conjunction with MATLAB with the nomenclature 45 ...
K. Rama Narasimha, S.N. Sridhara, M.S. Rajagopal, K.N. Seetharamu   +3 more
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Frequency Analysis on Pulsating Heat Pipe

ASME 2007 InterPACK Conference, Volume 1, 2007
The pulsating heat pipe should have one eigen frequency based on the temperature visualization of pulsating heat pipe. The preliminary model of pulsating heat pipe is established by the force balance between the driving force, the inertial force and the frictional force.
Wei Qu, Yuhua Li, Tongze Ma
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Double condenser pulsating heat pipe cooler

Applied Thermal Engineering, 2017
Abstract A novel pulsating heat pipe cooler (PHP) based on automotive technology is presented. This technology uses numerous aluminum Multiport Extruded (MPE) tubes disposed in parallel to achieve the desired compactness. The sub-channels of the MPEs are connected in a serpentine manner by means of fluid distribution elements integrated in the two ...
Daniele Torresin, Francesco Agostini, Adrian Mularczyk, Bruno Agostini, Mathieu Habert   +4 more
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Microfluidic systems with a pulsating heat pipe

Physics of Fluids, 2023
This research addresses a critical issue in modern microelectronics, which arises from increased miniaturization and heat generation, necessitating effective temperature control. The study focuses on pulsatile heat pipes, offering a passive and highly efficient heat transfer solution by utilizing fluid and vapor phases within a closed capillary channel.
Gampala Durga Priyadarsini, Gurunath Sankad   +1 more
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Heat Transport Characteristics of a Pulsating Heat Pipe

ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference, Volume 2, 2007
Heat transport characteristics of a closed loop pulsating heat pipe (PHP) have been investigated experimentally. The heat pipe consists of 12 turn copper pipes with 2mm inner diameter. The lengths of heating, adiabatic and cooling sections are 53mm, 100mm and 51mm, respectively.
Takao Nagasaki, Toshiyuki Hokazono, Yutaka Ito   +2 more
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Experimental research on heat transfer of pulsating heat pipe

Journal of Thermal Science, 2008
Experimental research was conducted to understand heat transfer characteristic of pulsating heat pipe in this paper, and the PHP is made of high quality glass capillary tube. Under different fill ratio, heat transfer rate and many other influence factors, the flow patterns were observed in the start-up, transition and stable stage.
Jia Li, Li Yan
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Performances of Flat Plate Pulsating Heat Pipes

ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 3, 2009
Flat plate pulsating heat pipe is useful for hot spot heat spreader. Two kinds of flat plate spreader of pulsating heat pipe are designed, fabricated and experimented. For the embedded circular capillary type, the transferred heat flux could reach 32W/cm2, the smallest thermal resistance for acetone, methanol and FC-72 were respectively 0.50, 0.57 and ...
Wei Qu, Bin Yang
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Microgravity performance of micro pulsating heat pipes

Microgravity - Science and Technology, 2005
A micro pulsating heat pipe made of a thin clear Teflon tube of 1.6 mm ID was used to observe the pulsating flow inside a heat pipe under different gravity levels using parabolic flights. More vigorous pulsating flow was observed under microgravity, compared to the depressed movements under hypergravity.
Junjie Gu, Masahiro Kawaji, Ryosuke Futamata   +2 more
openaire   +1 more source